75 lines
1.5 KiB
ArmAsm
75 lines
1.5 KiB
ArmAsm
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/*
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* Copyright (C) 2000 Red Hat, Inc
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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.file "have_mmx.S"
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.version "01.01"
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gcc2_compiled.:
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.text
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.align 16
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#if !defined(__MINGW32__) && !defined(__CYGWIN__) && !defined(__INTERIX)
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/* Magic indicating no need for an executable stack */
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#if !defined __powerpc64__ && !defined __ia64__
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.section .note.GNU-stack; .previous
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#endif
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.globl _pixops_have_mmx
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.type _pixops_have_mmx,@function
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_pixops_have_mmx:
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#else
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.globl __pixops_have_mmx
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__pixops_have_mmx:
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#endif
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push %ebx
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/* # Check if bit 21 in flags word is writeable */
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pushfl
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popl %eax
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movl %eax,%ebx
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xorl $0x00200000, %eax
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pushl %eax
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popfl
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pushfl
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popl %eax
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cmpl %eax, %ebx
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je .notfound
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/* # OK, we have CPUID */
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movl $1, %eax
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cpuid
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test $0x00800000, %edx
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jz .notfound
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movl $1, %eax
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jmp .out
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.notfound:
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movl $0, %eax
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.out:
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popl %ebx
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ret
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